﻿// This software is part of the Autofac IoC container
// Copyright © 2018 Autofac Contributors
// http://autofac.org
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.

using System;
using System.Collections.Generic;

namespace Autofac.Features.Decorators
{
    public interface IDecoratorContext
    {
        /// <summary>
        /// Gets the implementation type of the service that is being decorated.
        /// </summary>
        Type ImplementationType { get; }

        /// <summary>
        /// Gets the service type of the service that is being decorated.
        /// </summary>
        Type ServiceType { get; }

        /// <summary>
        /// Gets the implementation types of the decorators that have been applied.
        /// </summary>
        IReadOnlyList<Type> AppliedDecoratorTypes { get; }

        /// <summary>
        /// Gets the decorator instances that have been applied.
        /// </summary>
        IReadOnlyList<object> AppliedDecorators { get; }

        /// <summary>
        /// Gets the current instance in the decorator chain. This will be initialized
        /// to the service being decorated and will then become the decorated instance
        /// as each decorator is applied.
        /// </summary>
        object CurrentInstance { get; }
    }
}